When an RV shore-power inlet or weather cover needs replacement, match the inlet's complete model number, 30A or 50A electrical system, cord-end connector and mounting arrangement. Marinco makes white, black and stainless 30A and 50A inlets, along with cord connector covers and retaining rings. These components are not interchangeable simply because they have a hinged lid or the same face colour.
Know which part you need: vehicle inlet or cord-end connector?
A vehicle inlet is permanently mounted on the RV and exposes the correctly protected male contacts inside a weather-covered housing. A detachable shore-power cord has a separate female connector that mates with those contacts. The cord's external retaining hardware must suit the inlet's design.
30A, 125V inlet family
50A, 125/250V inlet family
Compare 30A Marinco shore-power inlets
The 301ELRV and black 301ELRV.BLK are covered 125V-class inlets in non-metallic housings. Marinco 303SSEL-BRV is a 316 stainless-steel option, and 304EL-BRV has a white contour housing with stainless trim. Confirm the exact mounting size, cover design and approved mating connector from the original part label.
Compare 50A Marinco shore-power inlets
Models 6353ELRV (white) and 6353ELRVBL (black) are part of the 125/250V-class 50A RV inlet family. The 6344EL-BRV white contour and 6373EL-BRV stainless alternatives have their own housings and mounting designs. An existing 30A cord end cannot be reused with these 50A inlets.
103RV versus 103ELRV locking-ring accessories
The 103RV is a yellow heavy-duty vinyl protective cover with a traditional threaded retaining ring for the appropriate 30A 305CRV connector. The 103ELRV is a different cover with Marinco's Easy Lock-style retaining ring. These are cord-end accessories, not complete inlets, and a ring that does not engage the original inlet is not a suitable replacement.
Matching female cord ends
Marinco 305CRV identifies a 30A female shore-power cord connector, while 6364CRV identifies a separate 50A female connector. Both must match the appropriate inlet and cable. The connector photograph does not confirm that it will mate with every inlet of the same amp rating.
What to check before replacing an inlet
Identify the stamped inlet MPN and electrical rating, measure the mounted housing and cutout, and inspect the lid hinge, seal, terminals, enclosure and fastening arrangement. Compare the installed cord-side connector, including its locking ring. Do not assume that the white and stainless housings share their exact screw spacing or recess depth without a manufacturer drawing.
Where only the cord-end cover is damaged, the 103RV/103ELRV accessory family may be relevant. Where the inlet's contact body, cap or mounting flange is damaged, the appropriate inlet assembly may be required. If contacts have discoloured or overheated, the cord and the mating inlet should both be inspected by a qualified RV electrical technician.